| States of the German Confederation in 1848 | 0 | - | 4.86 | 29,814 |
| Counties of England | 0 | - | 4.97 | 759,398 |
| Geography of the Dutch Empire | 0 | - | 4.68 | 33,763 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 76,376 |
| Invasions of Great Britain | 0 | - | 4.51 | 58,297 |
| Europe Map Quiz | 0 | - | 5.00 | 4,596,789 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 144,110 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 71,271 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 58,687 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 66,451 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 52,888 |
| Regions of France Map Quiz | 0 | - | 4.96 | 137,887 |
| States of Germany Map Quiz | 0 | - | 4.91 | 127,825 |
| States of Germany | 0 | - | 4.95 | 140,733 |
| Germany Immigration by Country | 0 | - | 4.86 | 76,797 |
| Counties of Ireland | 0 | - | 4.90 | 178,518 |
| Regions of Italy | 0 | - | 4.91 | 69,405 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 35,699 |
| Regions of Spain Quiz | 0 | - | 4.89 | 106,210 |
| Cantons of Switzerland | 0 | - | 4.97 | 46,354 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 90,298 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 16,813 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.70 | 56,750 |
| Largest Islands of Greece | 0 | - | 4.59 | 45,137 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 412,913 |
| History of Austria | 0 | - | 4.69 | 17,280 |
| Geography of the French Empire | 0 | - | 4.51 | 26,336 |
| The French Revolution | 0 | - | 4.45 | 23,036 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.42 | 22,964 |
| History of Ireland Quiz | 0 | - | 4.44 | 20,414 |
| History of Italy | 0 | - | 4.54 | 31,207 |
| The Vikings! | 0 | - | 4.46 | 27,903 |
| The Portuguese Empire | 0 | - | 4.54 | 11,771 |
| English Monarchs Quiz | 0 | - | 4.91 | 480,290 |
| History of France Quiz | 0 | - | 4.56 | 41,939 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 57,222 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 38,833 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 82,328 |
| Wives of King Henry VIII | 0 | - | 4.55 | 52,599 |
| Countries the UK Declared War On | 0 | - | 4.61 | 118,724 |
| Geography of the British Empire | 0 | - | 4.51 | 38,700 |
| Countries That Use the Euro | 0 | - | 4.93 | 77,699 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 354,098 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 106,493 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.84 | 41,046 |
| The Only European Country ... | 0 | - | 4.91 | 201,096 |
| European Countries NOT in NATO | 0 | - | 4.88 | 52,408 |
| Ancient Greek Trivia | 0 | - | 4.61 | 65,634 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 620,103 |
| History of The Netherlands | 0 | - | 4.45 | 16,750 |
| The Trojan War | 0 | - | 4.81 | 38,124 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.84 | 104,244 |
| Ancient Roman Trivia #1 | 0 | - | 4.83 | 75,589 |
| Roman Emperors | 0 | - | 4.96 | 110,766 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.70 | 11,511 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 63,750 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,147,808 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,281,648 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 186,957 |
| 10 Westernmost Countries in Europe | 0 | - | 4.95 | 146,442 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 206,308 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 83,862 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 300,793 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 150,142 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 83,997 |
| Eastern Europe Map Quiz | 0 | - | 4.90 | 122,878 |
| Slavic Countries | 0 | - | 4.96 | 107,589 |
| French History Multiple Choice | 0 | - | 4.55 | 32,043 |
| Germany Multiple Choice | 0 | - | 4.83 | 52,550 |
| History of Germany | 0 | - | 4.38 | 51,724 |
| Name that Greek Letter | 0 | - | 4.93 | 313,050 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 40,573 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 116,639 |
| History of Spain Quiz | 0 | - | 4.29 | 20,582 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,311 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.77 | 19,762 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 329,974 |
| Regions of France | 0 | - | 4.74 | 113,036 |
| France Immigration by Country | 0 | - | 4.77 | 73,924 |
| Olympian Gods Quiz | 0 | - | 4.96 | 473,974 |
| Ancient Greek Words | 0 | - | 4.92 | 106,472 |
| Provinces of the Netherlands | 0 | - | 4.76 | 38,004 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 47,406 |
| Foods in a Full English Breakfast | 0 | - | 4.45 | 98,859 |
| The UK for Americans - True or False | 0 | - | 4.46 | 57,298 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 91,272 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 131,355 |
| Three Band Flags of Europe | 0 | - | 4.97 | 185,190 |
| Pixelated Europe Map | 0 | - | 4.88 | 117,569 |
| Monarchies of Europe | 0 | - | 4.89 | 94,020 |
| European Countries with One Border | 0 | - | 4.97 | 176,752 |
| European Countries with the Fewest Borders | 0 | - | 4.98 | 173,360 |
| European Geography By Letter - B #2 | 0 | - | 4.81 | 66,455 |
| History of Russia Quiz | 0 | - | 4.48 | 31,263 |
| Federal Subjects of Russia | 0 | - | 4.94 | 133,077 |
| Countries Formerly in Yugoslavia | 0 | - | 4.96 | 120,721 |
| French Inventions | 0 | - | 4.08 | 13,682 |
| History of Paris | 0 | - | 4.24 | 13,388 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 67,890 |
| Geography of Ancient Greece | 0 | - | 4.77 | 31,170 |
| Embarrassing Chapters in Italian History | 0 | - | 4.23 | 11,762 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 53,381 |
| American to British Word Translation | 0 | - | 4.02 | 114,999 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,012 |
| Counties of England Map Quiz | 0 | - | 4.97 | 299,643 |
| British Geography Multiple Choice | 0 | - | 4.48 | 42,556 |
| Champions League Winners | 0 | - | 4.92 | 959,323 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 101,709 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 188,638 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 122,791 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 220,572 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 265,620 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 157,602 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 240,319 |
| Name a Valid European Country #2 | 0 | - | 4.92 | 93,507 |
| Russia Country Quiz | 0 | - | 4.84 | 110,352 |
| Countries That Border Russia | 0 | - | 4.98 | 448,631 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 33,791 |
| France Cities Map Quiz | 0 | - | 4.95 | 160,045 |
| Departments of France | 0 | - | 4.90 | 46,384 |
| Countries Bordering France | 0 | - | 4.87 | 377,330 |
| Germany Country Quiz | 0 | - | 4.82 | 151,583 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 121,378 |
| Countries Bordering Germany | 0 | - | 4.99 | 358,309 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,060 |
| Italy Country Quiz | 0 | - | 4.81 | 117,928 |
| Regions of Italy Map Quiz | 0 | - | 4.95 | 143,548 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 146,900 |
| Countries Surrounding Rome | 0 | - | 4.96 | 48,452 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 421,104 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 93,095 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 179,694 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 111,099 |
| Former Dominions of the British Empire | 0 | - | 4.32 | 23,646 |
| England or Wales? | 0 | - | 4.94 | 43,714 |
| All UEFA Champions League Teams Ever | 0 | - | 4.83 | 122,642 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 513,398 |
| Top 20 Football Clubs in Europe | 0 | - | 4.47 | 106,177 |
| Figures from Greek Mythology | 0 | - | 4.90 | 177,177 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,046 |
| Canary Islands | 0 | - | 4.61 | 17,118 |
| Switzerland Immigration by Country | 0 | - | 4.78 | 27,064 |
| British Spellings Quiz | 0 | - | 4.07 | 97,968 |
| British Groups of Things | 0 | - | 4.25 | 82,118 |
| British Acronyms | 0 | - | 4.39 | 44,944 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,553 |
| Geography of Scotland | 0 | - | 4.63 | 20,841 |
| Medieval English History | 0 | - | 4.53 | 42,561 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,493,261 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 184,609 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 69,485 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 135,351 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 62,113 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 84,478 |
| Countries that Border Poland | 0 | - | 4.99 | 167,313 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 80,397 |
| Countries With the Most Russian Speakers | 0 | - | 4.95 | 63,460 |
| Countries that Border Hungary | 0 | - | 4.98 | 101,680 |
| Moldova Country Quiz | 0 | - | 4.81 | 29,510 |
| Countries Bordering Serbia | 0 | - | 4.96 | 89,010 |
| French Geography Quiz #1 | 0 | - | 4.88 | 33,413 |
| Andorra Country Quiz | 0 | - | 4.89 | 30,252 |
| Countries Bordering Austria | 0 | - | 4.97 | 115,206 |
| Countries that Visit France the Most | 0 | - | 4.84 | 43,267 |
| Countries Closest to Metropolitan France | 0 | - | 4.88 | 69,980 |
| Geography of Germany | 0 | - | 4.32 | 16,603 |
| Countries With the Most German Speakers | 0 | - | 4.85 | 59,732 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.57 | 62,541 |
| Italian Inventions | 0 | - | 3.86 | 18,269 |
| Countries Bordering Italy | 0 | - | 4.94 | 98,553 |
| Countries Closest to Italy | 0 | - | 4.97 | 190,968 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 37,106 |
| Geography of the Roman Empire | 0 | - | 4.56 | 50,632 |
| Roman Names for Places | 0 | - | 4.69 | 56,061 |
| Byzantine History | 0 | - | 4.90 | 27,762 |
| Geography of the Spanish Empire | 0 | - | 4.48 | 36,441 |
| Countries Closest to Spain | 0 | - | 4.95 | 219,124 |
| British to American Word Translation | 0 | - | 3.75 | 251,849 |
| British Foods | 0 | - | 3.88 | 47,883 |
| British and American Word Differences | 0 | - | 2.68 | 45,627 |
| English Inventions #1 | 0 | - | 3.17 | 23,349 |
| English Inventions #2 | 0 | - | 3.98 | 8,492 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,138 |
| Counties of the UK and Ireland | 0 | - | 4.97 | 121,329 |
| Houses of British Monarchs | 0 | - | 4.52 | 63,862 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,095 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,266 |
| Prime Ministers of the UK | 0 | - | 4.96 | 417,861 |
| World Capitals Closest to London | 0 | - | 4.89 | 98,654 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 93,047 |
| Bridges of London | 0 | - | 4.17 | 9,840 |
| British Sport Trivia | 0 | - | 4.34 | 19,998 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 382,076 |
| Famous Welsh People | 0 | - | 4.21 | 9,596 |
| Liechtenstein Country Quiz | 0 | - | 4.64 | 26,089 |
| Malta Country Quiz | 0 | - | 4.80 | 29,932 |
| San Marino Country Quiz | 0 | - | 4.69 | 27,870 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 260,002 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 52,257 |
| European Cities Beginning with B - Click Map | 0 | - | 4.78 | 73,922 |
